CLUSTERS :
A cluster is a collection of servers that is managed together. WebSphere Application Server Provides cluster support into different types of servers. those are :-
-- Application Server clusters
-- Proxy server clusters
-- Generic server clusters
Application Server Cluster :
Application server cluster is a logical collection of application server processes that provides workload management and high availability.
These are 3 types
1. Vertical Cluster
2. Horizontal Cluster
3. Mixed Clusters
Vertical Cluster :
All the cluster members can reside on the same machine is called vertical cluster. vertical clusters offers fail over support inside one operating system, provide processor level fail over and increase resource utilization.it doesn't support application high availability
Horizontal Cluster :
In Horizontal cluster all the cluster members are spread across different server systems and operating system types. Horizontal clustering provides high availability and fail over.
Mixed Clusters:
The combination of Vertical cluster and horizontal cluster is called mixed clustering.
Workload Management :
Sharing Requests across multiple application servers.
High Availability :
If one server goes down other server will be available to take the traffic is called High availability.
Scalability :
Adding new servers at run time to handle extra load without an impact the clients business/ Customer.
Node :
A node a logical grouping of server processes managed by WebSphere and that share common configuration and operation control. A node is associated with one physical installation of WebSphere application server .
Node Agent :
An Administrative process that manages the server's or JVM's running on a node. Anode agent resides on a single node. it is a representative of node, node agent acts as a mediator between application server and deployment manaher.
Node Group :
A node group is a grouping of nodes with in a cell that have similar capabilities.
Managed Node :
If a node agent exits it is called managed node.
Unmanaged node :
If node don't have node agent that is called unmanaged node.
A cluster is a collection of servers that is managed together. WebSphere Application Server Provides cluster support into different types of servers. those are :-
-- Application Server clusters
-- Proxy server clusters
-- Generic server clusters
Application Server Cluster :
Application server cluster is a logical collection of application server processes that provides workload management and high availability.
These are 3 types
1. Vertical Cluster
2. Horizontal Cluster
3. Mixed Clusters
Vertical Cluster :
All the cluster members can reside on the same machine is called vertical cluster. vertical clusters offers fail over support inside one operating system, provide processor level fail over and increase resource utilization.it doesn't support application high availability
Horizontal Cluster :
In Horizontal cluster all the cluster members are spread across different server systems and operating system types. Horizontal clustering provides high availability and fail over.
Mixed Clusters:
The combination of Vertical cluster and horizontal cluster is called mixed clustering.
Workload Management :
Sharing Requests across multiple application servers.
High Availability :
If one server goes down other server will be available to take the traffic is called High availability.
Scalability :
Adding new servers at run time to handle extra load without an impact the clients business/ Customer.
Node :
A node a logical grouping of server processes managed by WebSphere and that share common configuration and operation control. A node is associated with one physical installation of WebSphere application server .
Node Agent :
An Administrative process that manages the server's or JVM's running on a node. Anode agent resides on a single node. it is a representative of node, node agent acts as a mediator between application server and deployment manaher.
Node Group :
A node group is a grouping of nodes with in a cell that have similar capabilities.
Managed Node :
If a node agent exits it is called managed node.
Unmanaged node :
If node don't have node agent that is called unmanaged node.
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